Question

(a+b)-c = (b+a)-c
a = 21, b = 13, c = -5

Answer 1

Answer:

a=21,b=13,c=-5

(21+13)-5

34-5=29

Answer 2

Answer:

39 = 39

Step-by-step explanation:

= (a+b)-c = (b+a)-c

= ( 21 + 13 ) - (-5) = ( 13 + 21 ) - (-5)

= ( 34) + 5 = ( 34 ) + 5

= 39 = 39